diff --git a/src/pages/oj/components/CodeMirror.vue b/src/pages/oj/components/CodeMirror.vue
index d91d41f01..02ef952cf 100644
--- a/src/pages/oj/components/CodeMirror.vue
+++ b/src/pages/oj/components/CodeMirror.vue
@@ -160,7 +160,11 @@
     },
     watch: {
       'theme' (newVal, oldVal) {
+        // console.log('theme')
         this.editor.setOption('theme', newVal)
+      },
+      'language' (newVal, oldVal) {
+        this.onLangChange(newVal)
       }
     }
   }